Display device



S. E. DUVECK.

Y DISPLAY DEViCE.

APPLICATION man JUNE 22.1916.

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S. E. DUVECK.

DISPLAY DEVICE.

APPucATloN man lun: 22.1916.

Patented Oct. 12, 1920.

2 SHEETS-SHEET 2.

SOLOMON ELIAS DUVElC-K, OF MONTREAL, VQUEBEC, CANADA.

DISPLAY DEVICE.

Application led June 22, 1916.

To all whom t may concern:

Be it known that l, SOLOMON ELIAS DU- VEGK, subject of the King ofEngland, residing at Montreal, Proivince oil Quebec, Canada. haveinvented new and useful Improvements in Display Devices, of which thefollowing is a specification.

My invention relates to display devices.

rThe object of my invention is to provide means for selecting andbringing into view any one of a series of cards and for automaticallyreturning the card 4to its proper place after it has been exposed toview and read. y

A more specific object is .to provide a positive operating means forproducing a tension on a spring arranged to operate the card displaymeans `and to provide a selecting' mechanism cooperative therewith whichwill permit the operation of the displaying means after the desired cardhas been selected.

A further specific object is to provide a locking means for theselectingmechanism,

so Vthat it cannot be operated until a selected card has been returned.

further specific object is Yto provide means for so supporting the cardsto be displayed that the mechanism does not become disarranged by theselection of a card and the exposure thereof to view, and `which may bepositively actuated without slipping and which may be Yadjusted andbalanced to meet the VArequirements of varying ,numbers of 3.5 cards.

A further Objectis Vto provide a complete operativemachine which issoadjusted that thc parts are balanced so that a minimum of power isrequired to aotuate any of the elements thereof.

My invention consists of the construction, combination and arrangementof parts as herein illustrated, described and claimed.

ln the yaccornpanying drawings, formino` part of this application, lhave 'illustrated a form of embodiment of my invention, in whichdrawings similar characters designate corresponding` parts and in which:

Figure l is a vertical section taken from vthe front to the back of themachine;

Fig. 2 :is a rear elevation Vwith the back cover removed;

Fig. 3 is a fragmentary detail in side ele.- vation of a part of lthecard supporting 5LB chain.y the card supporting rods being shown yinsection;

Specification of Letters Patent.

Patented Get. l2, 1920.

Serial No. 105,290.

Fig. 4 is a fragmentary detail in elevation of the upper end of the cardelevating tube and a portion of its lguide rod;

Fig. 5 is a fragmentary detail in central vertical section through `theplunger of the card selecting means; i

Fig. 6 is a fragmentary detailin plan of the card selectilmr dial andadjacent parts;

Fig. 7 is a fragmentary detail in enlarged sectiontaken through the topof the front part of the casing forming part of the invention; and

Fig. 8 is an enlarged fragmental plan View of the movable plates.

Referring to the drawings l designates an approximately rectangularcasing having its back wall `formed in :two removable scctions 2. Thefront wall of the casing is also formed of two removable sections 3, tofacilitate access to the interior of the machine for adjustment of theparts and renewal of the cards.

At its base the casing l is provided with a forwardly projectingrportion 4. which is open at the top and covered by a flanged plate 5.The bell crank levers 6 have their upper ends pivoted to the cover 5.are rock-- ably mounted on shafts 7 and have their lower ends pivoted toa connecting rod 8. A connecting rod 9 has its forward end secured totherod 8 and its opposite end pivoted Vto an arm 10 secured on a shaft ll,which is disposed transversely of the casing 1 adjacent its bottom andcarried in bearings 12 secured on the side walls of the casing.

An arm 13 has its forward end fixed on the shaft ll and its rear endpivotally secured to a vertically movable rod 14. A IieXible member l5has one ond connected to the rear ond of the arm 13, is passed over aVpulley 1G secured to the sido of the casing l, and carries at itsopposite end a` weight 17.

llltermediateof its ends the slidable rod 14 is provided with aprojecting lug 18 to which is secured the lower end of a coiled spring;r19 the upper end of which springs` is secured to a lug 2O on avertically slidable rod 2l. carried by retaining straps 22 secured tothe side wall of the casing l.

A headed pin 23 is secured to the slidable rod 21 and projects through aslot 24 formed in the slidable rod 14 to form a retaining),r means forslidably supporting the rod la and to permit its movement in onedirection without movement of the slidable member 21 and at the sametime to secure the two rods 14 and 21 together to cause movement of therod 21 when the rod 14 is elevated.

The rod 21 is provided with a projecting member 25 having a rounded facelying normally in the path ot movement of a transversely slidablelocking member 26, slidably retained in straps 27 on the side of thecasing 1. The rear end of the member 26 is also rounded so that movementupward of the rod 21 is readily permitted, while the slidable bar 26 inits normally projected p0- sition will be struck by the projectingmember 25 and act as a detent against the downward movement of the rod21.

vertically disposed member is piv` otally connected to the slidabiemember 26 and its upper end is engaged with a projecting member 29carried by a plate 30 which is rotatal'ily supported by the upperprojecting part ot the casing 1. A spring 31 normally maintains theslidable liar 26 projected to the rear to effect the locking described.

Carried by the )rejecting upper part of the casinor 1 (see hier. 7) is abottom plate 32, on w lich is disposed the said plate 3() carrying theprojecting member 2i). Disposed on the plate 30 is an upper plate 33. Ashaft 34e projects through the center oi the said plates and a plate 35is secured thereto by any suitable means. ll'he top plate 35 is disposedover the plate 233 and is surrounded by a rim 36 provided with indexindicating lines.

The plates 32 and 33 are provided with circumferential openings 37 and37 respectively which register while the corresponding openings 37 inthe plate 30 do not eriartly register with these openings under normalconditions.

Carried by the )late 35 is a plunger casing S12- (see Fig. 5i, having apointer 21) arranged to come into register with the indicating marks onthe rim 36 and aise with the indicating characters 40, which are placedon a suitable card or plate disposed beneath the glass covering 41 ofthe upper surface of the casing 1.

Disposed in the easing 3S to have a vertical movement therein is aplunger 42, normally maintained in an elevated position by means of aspring 43 working against an expanded head 44. rlhe head 411 bearsagainst the head of a plunger or handle 46, the upper end et' whichprojects outside oi the easing. The casing 3S also acts as a handle bymeans of which the plate 35 may be rotated to cause rotation of theshaft 34.

A recess 47 is formed in the lower end of the plunger 42 s0 that whenthe plunger is actuated downward the recess is engaged by the wall ofone of the openings 37 of the plate 30, and the tension of the spring 31acting on the pivoted member 2S rocks the member 29 so that the plunger412 is locked against vertical movement'.

A suitable closure plate 4S closes the lower end of the easing 38 andforms a seat for the spiral spring -1-3A To prevent axial movement ofthe plunger 42 a pin 49 is carried by the plate etti and engages` theplunger 42, so that the recess 47 will always he engaged by the wall ofone ot' the openings 37 of the plate 30.

Secured on the lower end of the shaft 3ft is a gear 50, disposed to meshwith a gear 51 secured on a vertical shaft 52 arranged adjacent thetrent wall ot the casing 1, and carried in bearings 53, the upperbearing ot which is secured to the top part of the projecting portion ofthe casing 1 and the lower bearing ot which is secured to the lixcd part54 ot the front wall of the casing. Secured on the lower end ot' theshaft 52 is :i spiral gear 55 disposed to mesh with a spiral gear 5Gsecured on a horizontally disposed sha-lt 57 carried in bearings (notshown) on the lside walls of the casing 1.

Carried on the shaft 57 adjacent the side walls of the casing 1 aresprocket wheels 53 over which are disposed chains 59` passing overidlers G0 in bearings 61 and idlers 62 adj ustfably carried in bearinffr63 secured to the side wall of the easing 1. The bearings 63 areprovided with slots 64 through which are disposed set screws 65 passingthrough the idlers G2 to form a bearing therefor so that the idlers maybe moved to tighten or loosen the chains to meet the requirements of thevariations of weight in the cards supported thereby.

U-Ashaped guards GG are secured to the side walls of the casing 1 bymembers 67 and project over the upper and lower sides of the chains fora portion of their length.

Carried by the chains 59 are bifurcate projecting members 68 (see Fig.3) which are arranged to receive the )rejecting ends ot rods 69 carryingthe display cards 70.

The arm 71 ot a common form of door check 72 is secured to a link 73,the lower end of which by means of a pin 74 is connected to the rear endof the arm 13, the lower end ot the slidable rod 14. and the end ot theflexible member 15 carrying the weight' 17.

A link 75 has its upper end secured to the lower end ot the slidable rod21 and its opposite end is pivoted to the upper end of a link 76. Thelower end of the link 76 is secured on a shaft 77 carried in bearings 78on opposite sides of the casing l, the shaft being disposed horizontallyand transversely ot' the casing. Secured on the shaft 77 adj aoent theopposite sides of the casing 1 are arms 79, the forward ends of whichare connected to links 80. The upper end mamas of each link 8) issecured to the lower end of a lazy tongs 8l, pivotally secured as at 82to the adjacent side wall of the casing.

Carried by the upper' end of each of the lazy tongs is a tube 83surrounding a guide rod 84, the latter of which extends from the top toa point adjacent the bottom of the casing. The upper ends of the tubes83 (see Fig. 4), are each provided with a lug 85 arranged to engageunder the ends of the rod 69 which is brought into register therewith bya movement of the chain 59. An upwardly projecting portion of the casing1 on its front side has a window 86 and adjacent thereto inside of thecasing is a iixed backing 87.

A spring 88 has one end secured to the casing and its opposite endsecured. to the actuating rod 8, tending to maintain the cover 5 inraised position and when the cover 5 is depressed by the weight of anoperator standing thereon to produce tension tending to force theactuating rod 9 toward the front of the machine.

Springs 89 have their lower ends secured to the side walls of the casingl and their upper ends connected to the lower ends of the lazy tongs 81,the tension of which springs tends to balance the weight of the movableparts carried by the lazy tongs to render the operation thereof possiblewith a minimum expenditure of power.

To balance the weight of the cards 7() on each side of the idler 6() sothat theV chains 59 may be easily moved, springs 9() have their lowerends secured to the removable section 2 and to the vertical shaft relspectively and their upper ends connected to the chains As shown in Fig.1 the bulk of the cards are on the right hand side and a tension isproduced on the spring 90 on the left hand side, while the spring 9() onthe right hand side s-practically compressed without tension.

In the operation of the machine the operator stands on the cover 5,overcomes the tension of the sprinr 88 and rocks the actuating rod 9toward the front of the machine. This movement is communicated by thelink 10 to the shaft 11 throwing the rear end of the arm 13 downwardcarrying with it the slidable member 14 and the arm 71 of the doorcheck. At this point the energy of the door check 72 and the wei Yht 17are stored up to be used as hereinafter described. The movement downwardof the. slidable rod 14 produces a tension on the spring 19 which isexerted tending to pull the rod 21 downward, which tension is storeduntil the rod 21 is released. The operator still standing on the cover 5turns the casing 38 until its pointer 39 comes into register with theindex indicating element 40 desired. This movement causes rotation ofthe shaft 34 carrying the gear 50 and the consequent rotation of theshaft 52 and the shaft 57. causing rotation of the sprocket wheels 58.Rotation of the sprocket wheels causes movement of the chain 59 andbrings to a point over the lugs 85 of the tubes 83 the card T()corresponding to the index character into register with which thepointer 39 has been brought by the operator.

The operator then presses on the plunger 46, overcoming the tension ofthe spring 43 and forcing the lower end of the plunger 42 through theplates 38, and The openings 87 in the plate 30 being slightly out ofregister this plate is slightly rocked, causing movement of itsprojecting part 2 and the consequent rocking of the pivoted member 28 towhich is connected the slidable member 26. This movement causes thcretraction of the slidable member 2G, from beneath the end of theprojecting member on the slidable rod 21. The tension of the spring 19is then free to act upon the slid-ahhx rod 2l forcing it downwardcarrying with it the link 75 and causing a rocking of the link 7G. Thelilik T6 being sccured on the shaft 77, the shaft is rocked and carrieswith it the arm 79 and the lower ends of the lazy tongs 81, causing thelazy tongs to be extended and to carry upward the .tubes 83. The lugs ofthe tubes engaging under the ends of the rods 69 of the selected card 70, the card is carried upward between the backing 87 and the window 88,through the latter of which it may be read by the operator.

At this stage -the plunger 42 is retained in locked position as therecess 47 is engaged by the wall of the opening 37 in the plate 30, sothat the chains can not be moved to bring another card into position tobe raised or to cause disarrangement of the cards or their Supportingand moving mechanism.

The operator having read the exposed card steps from the cover 5.permitting the exertion of bhe tension of the spring 88 to return thecover to its elevated position and also permitting the utilization ofthe stored energy of the door check 'T 2. and thc weight 17 to act onthe slidable rod 14. At this point the headed pin 23 has engaged thelower end of the slot 24 and the energy of the actuating membersdescribed will force the slid able member 14 upward carrying with it theslidable member 21. The rounded side of the projecting member 25 of theslidablc member 21 will ride against the adjacent rounded end of theslidable member 26 and will overcome the tension of the spring 81rocking the member 29 slightly causing the movement of plate 80 torelease the plunger 42` so that the index may be set to anotherindicating character. At the same time the upward movement of theslidable member 21 carries the link 75 upward rocking the link 76 andthe shaft 77 so that the arms T9 are carried upward and their movementcommunicated to the lazy tongs to retract tbe same and also the tubes H3returning llle selected card 7() to its original position.

llaving thus fully described my invention, what I claim as new anddesire to secure by Letters latent is:

l. display device comprising the combination oi' a plurality ol cards,rods secured transversely of the cards, endless chains arranged on eachside of the cards beneath the rods, a pair of oppositely opposed springsfor each chain, said. springs each having one end fixed and its oppositeend fixed to the chains to balance the Weight of the cards, means formoving the chains to select a particular card and means for elevatingand lowering the selected card.

2. display device comprising the conn binalion ol a plurality ot cards,a pair of spaced chains arranged to support the cards, means i'crsupporting the chains, sprocket wheels arranged to move the chains, ahorizontal shaft disposed through the sprocket wheels, a spiral. gearsecured on the shaft, a vertical shaft, a spiral gear on said verticalshaft arranged to mesh with the rst mentioned spiral gear, means forrotatingr said vertical shaft to select a desired card, and means forelevating and retaining the selected card.

3. A display device comprising the combination of a plurality of cards,means Jfor supporting the cards, means for movingr the supporting meansto select a desired card, a

vertically operable member arranged to en gage the selected card, and anextensible member secured to the vertically operable member, means forextending and retracting the` extensible member, and means for connterbalancing the weight and friction of the extensible member and itsconnected parts.

4. A display device comprising the combination or' a plurality of cards,means for supporting the cards, means for moving the supporting means toselect a desired card, extensible means for elevating the selected card,means for actuating the extensible means comprising a rockable member, avertically movable member connected with the rockable member, a secondvertically movable member slidably connected with the verticall ymovable member, a spring connected to both of said members, means forproducing a tension on the spring, and means for raising the secondvertically movable member when the tension is removed.

5. A display device comprising the combination of a plurality of cards,means for supporting the cards, means ioi moving the supporting means toselect a desired card, extensible means for elevatingthe selected card,means for actuating the extensible means comprising a roelrable member,a verA tically movable member connected with the rockable member. asecond vertically movable member slidably connected with tbe verticallymovable member, a spring connected to both o'l said members, means forprmlucing a tension on the spring, and a door check and a Weightedflexible member secured to the second vertically movable member.

6. A display device comprising the combination of a plurality of cards,means for supporting the cards, card moving means for moving thesupporting means to select a desired card, a pair of vertically movabletubes, means carried by said tubes for engaging the selected card, lazytongs connected to the lower ends of said tubes, means for actuatingsaid lazy tongs whereby said tubes may be raised and lowered and meansqieratively connected to said card moving means for retaining said lazytongs against movement substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribin Witnesses.

SOL MON ELIAS DUVECK.

Witnesses:

FRANCIS K. BATES, ANDREW ARMSTRONG.

